Results 81 to 90 of about 123,857 (304)

Spatial distribution of PAH concentrations and stable isotope signatures (δ13C, δ15N) in mosses from three European areas – Characterization by multivariate analysis [PDF]

open access: yes, 2014
Polycyclic aromatic hydrocarbon (PAH) concentrations and N, C stable isotope signatures were determined in mosses Hypnum cupressiforme Hedw. from 61 sites of 3 European regions: Île-de-France (France); Navarra (Spain); the Swiss Plateau and Basel area ...
Ares   +65 more
core   +4 more sources

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes for their synthesis [PDF]

open access: yes, 1988
Synthetic procedures are disclosed for tetraalkyls, tetraacids, and dianhydrides substituted 1,1,1-triaryl 2,2,2-trifluoroethanes which comprises: (1) 1,1-bis (dialkylaryl) 1-aryl 2,2,2-trifluoroethane, (2) 1,1-bis (dicarboxyaryl) 1-aryl 2,2,2 ...
Alston, William B., Gratz, Roy F.
core   +2 more sources

A liquid chromatography tandem mass spectrometry method for simultaneous analysis of 46 atmospheric particulate-phase persistent organic pollutants and comparison with gas chromatography/mass spectrometry, [PDF]

open access: yes, 2017
A novel multi-analyte method for the simultaneous determination of 46 compounds of environmental concern, most of them belonging to the category of persistent organic pollutants, was developed using high-performance liquid chromatography and the results ...
Buiarelli, Francesca   +4 more
core   +1 more source

Boosting Sensory Nerve‐to‐Bone Interactions Enhances Hedgehog Mediated Calvarial Bone Repair

open access: yesAdvanced Science, EarlyView.
Boosting sensory nerve activity via TrkA agonism strongly accelerates calvarial bone repair in adult mice. Furthermore, single‐cell RNA sequencing and neuron–bone interactome analyses identify these sensory neurons as a direct neural source of Hedgehog pathway ligands. Consequently, these ligands drive osteoblast differentiation of skeletal progenitors,
Zhao Li   +9 more
wiley   +1 more source

Risk assessment of chemical substances of safety concern generated in processed meats

open access: yesFood Science and Human Wellness, 2019
This manuscript is reviewing the presence of substances of safety concern that may be generated in different types of meat products. Such substances include N-nitrosamines that can be generated under certain conditions when using nitrite as preservative,
Mónica Flores   +3 more
doaj   +1 more source

Characterization of aromaticity in analogues of titan's atmospheric aerosols with two-step laser desorption ionization mass spectrometry

open access: yes, 2016
The role of polycyclic aromatic hydrocarbons (PAH) and Nitrogen containing PAH (PANH) as intermediates of aerosol production in the atmosphere of Titan has been a subject of controversy for a long time.
Benilan, Yves   +6 more
core   +3 more sources

Polycyclic Compounds. Part I. Synthesis of Sesquiterpene Compounds

open access: yes, 1965
A synthesis of 1,6-dimethyl-4-isopropyhlaphalene (VII) from the ketone (II) is described. 3-Methyl-6-isopropyl-2-hydroxymethylenecyclohexanone (I: R=CHO) on alkylation with 4-diethylaminobutan-2-one methoiodide according to the known procedure, followed by treatment with dilute methanolic alkali, leads to 5-methyl-/8-isopropyl-2-oxo-10-formyl-2,3,4,5,6,
openaire   +3 more sources

Revisiting Target‐Aware de novo Molecular Generation with TarPass: Between Rational Design and Texas Sharpshooter

open access: yesAdvanced Science, EarlyView.
TarPass provides a rigorous benchmark for target‐aware de novo molecular generation by jointly evaluating protein‐ligand interactions, molecular plausibility, and drug‐likeness on 18 well‐studied targets. Results show that current models often fail to consistently surpass random baseline in target‐specific enrichment, while post hoc multi‐tier virtual ...
Rui Qin   +11 more
wiley   +1 more source

Polycyclic compounds as soluble epoxide hydrolase inhibitors

open access: yesInvention Disclosure
In this invention, a novel family of benzohomoadamantane-based soluble epoxide hydrolase inhibitors is disclosed. The benzohomoadamantane scaffold is a polycyclic, readily accessible, system that features a homoadamantane unit fused with an aromatic ring.
S. Codony   +5 more
doaj   +1 more source

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